JPS58159718A - Warm air type dryer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hot air dryer, and particularly relates to a device for creating an air flow, a heating device for heating the air in the device for creating the air flow, and a heating device for heating the air in the device for creating the air flow. The dryer is equipped with an air outlet for discharging the heated air toward the user's hands, and is mainly used for drying the user's hands or other body parts.

Furthermore, the present invention also relates to equipment including such a dryer.

The main feature of the hot air dryer of the present invention is that the device for creating the air flow described above is composed of an air moving device operated by compressed gas, and that the supply amount of the compressed gas to be sent to the air moving device is controlled. The control device is operable by the user.

Preferably, the compressed gas is compressed air.

As the air moving device, an ejector, a venturi tube, a jet pump, a pneumatic device, a fluid amplifier, or the like can be used.

The heating device may be an electric heating element or, for example, a heat exchanger in which hot water is circulated, and this device is preferably provided upstream of the air moving device.

The compressed gas control device may be of a manual type connected to a valve for controlling the supply of compressed gas to the air moving device. The valve is suitably an electrically actuated solenoid valve, and the manual device preferably comprises an electrical switch or a proximity sensor. This manual device, or at least the element that can be operated by the user, is conveniently located near the air outlet of the dryer.

The dryer further includes a housing that houses the air moving device and the heating device and projects from the outlet of the hot air reservoir created by the air moving device and the heating device. The outlet may be in the form of a nozzle provided in the housing, or may be movable relative to the housing so that the hot air is directed toward the hands or face of the user.

In some cases, a generally tubular air moving device is mounted so that it can be oscillated, and the outlet in the dryer itself is
It may be possible to move.

Another feature of the invention is a plurality of hot air dryers as described above, a source of compressed gas for operating the air moving device, and a source of compressed gas connected to the source of compressed gas and via a supply pipe. and a distribution device having a plurality of outlets for compressed gas connected to each dryer.

If the heating devices of several dryers consist of heat exchangers, each heat exchanger is preferably supplied with heating fluid from a common reservoir, for example a hot water boiler.

The distribution device may be equipped with a regulating device for regulating the pressure of the compressed gas.

The valves of the control device associated with each of the plurality of dryers may be located proximate to the air moving device. for example,
It may be located inside the housing or near the distribution device associated with each dryer.

The housings of the plurality of dryers may be elongated, with drying sections spaced apart longitudinally and communicating with each other. At this time, it is preferable that the compressed gas supply pipes for the dryer be housed in a housing that communicates with each other in a penetrating state.

Embodiments of the hot air dryer according to the present invention will be described below with reference to the accompanying drawings.

As shown in FIG. 1, the hot air dryer 00) of the present invention includes a housing 0υ, and the housing 00 includes zero air moving devices operated by compressed air and a heating device (131 is accommodated.

Air moving devices (12) operated by compressed air are known and come in various types, depending on the type they are usually Venturi tubes, ejectors, jet bows, etc.
It is also called a kanki device, a fluid amplification device, etc.

These devices are powered by a small flow of compressed air and can create a large air flow by attracting ambient air, creating a large exhaust flow that is 20 times the amount of compressed air consumed. . Typical examples of such devices are, for example, British Patent Nos. 1,530,758, 1,505,572, 1,009,170;
No. 1,101.5 [] No. 22 No. 1.157,462
No. 1,089,957 and No. 863.124.

A typical air moving device includes a tubular body with a constricted throat. The compressed air is guided into the inside of the tubular body through an appropriately shaped annular slit provided at a location adjacent to the throat of the tubular body. The generated high-velocity airflow flows along the tube wall and entrains the surrounding air, creating a greatly amplified airflow.

In operation, the air moving device 02) sucks ambient air into the housing (11) through an inlet 04) provided on the side of the housing 0υ. Said heating device f1 is used to heat this air before it enters the air moving device (121).
3) is preferably provided between the air moving device (121) and the inlet (14).

The flow of warm air generated by the air moving device α2 is discharged from the discharge port (15) in the housing 01) toward the user's hand to be dried. Discharge port (1 piece,
It is preferable to have a nozzle (+61) that directs the flow of hot air generally downward.In addition, this can be rotatably attached so that when the user wants to dry his/her face, the hot air is directed upward. It is also desirable to do so.

The dryer described above is particularly suitable for single use in factories. The reason is that compressed air, which is widely used in factories for moving crab tools, etc., can be supplied to the air moving device (121).

The compressed air is provided in the housing 0υ and is supplied through a valve (
+9 and is supplied by the supply pipe t18). When the user controls the amount of compressed air supplied to the air moving device, the operation of the air moving device (12+) can be controlled.

Preferably, the valve is an electrically energized solenoid valve. When this valve (1!11 is not energized, compressed air is transferred from the supply pipe (1 &
For example, by means of a manual switch 07) provided near the discharge port 05), or near the discharge port 151,
+1) energized by a switch mechanically or pneumatically connected to an element operable by the user or when a proximity sensor mounted on the housing is actuated by the approach of the user; This allows compressed air to flow into the device oz.

Heating device OJO energization is also controlled by actuation of a manual electrical switch or possibly a proximity sensor. A timing device (not shown) is built in to energize the valve α3 and the heating device (1) for a predetermined time upon activation of the switch or the proximity sensor, and de-energize them when the activation is completed. ing.

In some cases, the valve controlling the supply of compressed air may be replaced by a mechanical valve mounted on the housing in the vicinity of the air outlet and operated by the user, appropriately linked to the valve. It's okay.

Usually about 4.2-10.6 kg/crt? (60-1
In order to suitably operate the air moving device from a source of compressed air that is within the range of 50 psig), the pressure regulating and distributing device (
20! For example, about 1.8 kg7 cm'
Clean compressed air at an appropriate pressure (25 psig) is supplied by pipe Cυ.

The regulated pressure displayed on the pressure gauge (241) is determined by the number of drying devices used in the equipment.

As shown in FIG.
21) reduce the pressure of the air exiting the air moving device (12+) to a suitable pressure for operation, so that regardless of the number of drying sections used at one time, each one maintains a suitable pressure. It is equipped with a secondary regulator.

The clean and dry compressed air is sent to the distribution/collection pipe (2ω) which has a plurality of discharge ports (22).
J are connected to corresponding parts of the hot air dryer via valves 0, respectively. However, for simplicity, only one of these connections is shown in the figure.

The valve αl has a housing 0υ as shown in the figure.
Rather than inside the pressure regulating/distributing device (2), it is preferable to install it between the distribution/collection pipe e51 and the supply pipe tt5. It is also preferable to operate it remotely by a manual electric switch via an electric wire, or by a proximity sensor attached to the housing 0υ near the outlet α9.

Additionally, heating devices other than electrical heating devices may be used to heat the air flow produced by the air moving device (121).

For example, as shown in FIG. 2, a heat exchanger (31) may be used and a liquid heat medium may be circulated by a pump (32) controlled by the manual switch or proximity sensor.

This liquid medium may be, for example, hot water drawn from a water heater in a washroom. However, depending on the circumstances of the piping or the set temperature, there may be cases where it is not possible to circulate the liquid medium in this manner. Therefore, especially when equipped with a large number of drying sections, it is recommended to use dedicated gas or oil boilers or immersion electric heaters (
Insulated hot water tank G! It is preferable to take hot water from 3 (as shown).

It is supplied to the heat exchanger Gυ in the section. The hot water tank is
As shown in the figure, it is placed away from the heat exchanger 01) and as close as possible to the pressure regulating and distributing device.
It is designed to be kept at about 200°F.

In order to keep the amount of water in the hot water tank (33) constant, the main water supply pipe (to) is connected to the hot water tank (331) through a regulating tank (3'O) and a U-shaped flexible pipe connection.

When all the drying sections are fully utilized, the hot water coming out of the hot water tank is transferred to the heat exchanger by the action of a thermosiphon.
Since the heat exchanger Gυ is circulated, static heated air is generated around each heat exchanger Gυ. Therefore, when one of the manual switches αD connected to the drying section is pressed, the pump is activated, and hot water begins to circulate through each heat exchanger Gυ.
The still heated air around the heat exchanger is immediately available.

Alternatively, each pulp is placed in the middle of a hot water supply pipe to each heat exchanger, which opens in response to activation of a switch in the drying section in question, allowing it to absorb heat from the drying section already in operation. Hot water may be pumped only to the exchanger.

Whether an electric heating device or a heat exchanger is used as the air heating device, it should be provided downstream rather than upstream of the air moving device 02. This is as described above with reference to FIG. However, it is necessary to arrange it appropriately so as not to excessively obstruct the flow of air exiting the air moving device a2.

Furthermore, using other suitable gases instead of compressed air,
An air moving device may also be activated.

In a dryer having multiple air outlets, each dryer may be provided in a separate and mutually independent housing (11), as described above with reference to FIG.
In some cases, they may also be provided in housings connected in series, for example.

FIG. 6 shows an example of a dryer used in a factory, etc., in which a dryer having a large number of blowing parts is equipped with a plurality of nozzles C7) formed by partitioning long pipes with partition walls.
A pressure regulating and distributing device (2) is attached to one end of this pipe.

Each assembly, separated by a housing (27), includes an air moving device, a heating device, a heated air flow for discharging and pivoting to direct the air flow toward the user's hands or face. It is equipped with a compressed air supply nozzle and a push button switch 129 (or a proximity sensor) for controlling the supply of compressed air to the air moving device, and is provided with a heating device if necessary.

As mentioned above, the compressed air pipe extends through the housing 127+ from the pressure regulating/distributing device (201) to the air moving devices of various parts, and each of these parts has electric wires and electric wires connected to the manual push button switch 4. power supply line to the heater,
Alternatively, in some cases, a hot water supply pipe for the heat exchanger is built-in.

Each housing 127) also includes an air intake through which, in use, ambient air is drawn and heat is blown therethrough.

FIG. 4 shows a rotatable nozzle (I61) as described above.
Instead of adding (to), it indicates that the air moving device (12+) can be rotated so that the outlet of the air moving device az itself functions as the outlet of the dryer. This eliminates the need to provide separate discharge ports, and improves the efficiency of the heated air flow due to the following effects.

(1) The length of the air outlet section is shortened.

(11) Air exits via a straight path, rather than via the curved outlet or nozzle (shown in Figure 1) that is commonly associated with dryers.

A dryer equipped with an air moving device operated by compressed air in the manner described above has the following advantages compared to known dryers:
° Much better.

In the past, it was customary to provide the dryer with a motor-driven blower, usually a centrifugal blower, to create the air flow. However, such a blower is quite large.

In comparison, air moving devices are much smaller, so the overall device and installation space can be considerably smaller. Therefore, in a washroom or the like where available space is extremely limited, a dryer having many drying sections can be conveniently mounted on the wall above each washbasin (4Q (see FIG. 2)).

It is further advantageous to provide an air moving device operated by compressed air inside the device, which significantly improves safety, in contrast to previous devices with electric blowers.

In FIG. 4, the compressed air supply pipe is a flexible ξ tube connected to the top of the air moving device α. However, instead of this, using a shaft joint that rotates appropriately,
This pipe can be connected parallel to the axis of rotation of the air moving device. In this way, the advantage is obtained that the ξ-ib does not interfere with the rotation of the air moving device. Further, in this case, the ξ-ib does not necessarily have to be flexible.

4.11 i (D simple Ftsu,
: FIG. 1 is a diagram schematically showing an embodiment of a dryer of the present invention suitable for installation in a factory or the like.

FIG. 2 is a partial view of an indirect heating type dryer.

FIG. 3 shows a portion of an example of a factory dryer including a plurality of drying sections.

FIG. 4 is a partial sectional view showing different examples of heated air discharge ports of the dryer.

(10) Hot air dryer 01) No Uji Puffer 0
Force air transport device f131 heating device circle inlet
(19 outlet ue nozzle
(17) Manual switch + 1gI supply pipe
(11 valve ■Pressure regulating distribution device 221 discharge port regulator (2
Seepage pressure gauge (251 Distribution piping Qη housing/g (28) Air supply nozzle captive push button switch (To) Air intake port Ql) Heat exchanger
(c) Pump (to) Hot water tank 04)
Drowsiness heater 09 pipe (g) Main water supply pipe TSN adjustment tack ■Flexible pipe (40 basin

Claims (1)

[Scope of Claims] A hot air dryer comprising an air outlet for discharging air, the device for generating the air flow comprising an air moving device operated by compressed gas, and supplying the compressed gas to the air moving device. A hot air dryer characterized in that the air moving device has a generally tubular shape, and the discharge port itself is provided with a control device operated by a user to control the amount The hot air dryer according to claim m, characterized in that the hot air dryer is rotatably mounted so as to have a rotationally adjustable discharge port. (3) A compressor for operating the air moving device. a gas source;
A distribution device having a plurality of compressed gas outlets connected to this compressed gas source and connected to each of the plurality of drying sections by a supply pipe, and a heating device that heats each of the plurality of drying sections by a heat exchanger method. and the source for the heating fluid comprises as a common reservoir, such as a hot water boiler.
The hot air dryer according to item 1) or item (2). (4) The housings of a plurality of drying sections are interconnected to form a long tube having drying sections arranged at regular intervals along the length. The hot air hand dryer described in item (3).